body{
    background-image: url("book.jpg");
    background-size: 100% 100%;
    background-repeat: no-repeat;
    background-attachment: fixed;
}

.myCenter{
    background-color: #fff3cd;
    border-radius: 15px;
    opacity: 0.85;
    margin-top: 180px;
    margin-left: 200px;
    margin-right: auto;
    height: 370px;
    width: 700px;
    padding: 5%;
}

.myCenter mySign{
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-content: center;
}

.myCenter input,button{
    margin-top: 2%;
}

